/* 图片预览区域 */

.preview_img {
    position: absolute;
    width: 398px;
    height: 398px;
    border: 1px solid #ccc
}


/* 放大镜 */

.mask {
    display: none;
    width: 200px;
    height: 200px;
    background-color: red;
    opacity: 0.5;
    top: 0;
    position: absolute;
    cursor: pointer;
}


/* 大图片外部盒子 */

.big {
    display: none;
    width: 500px;
    height: 600px;
    position: absolute;
    left: 600px;
    top: 0;
    border: 2px solid #ccc;
    overflow: hidden;
}


/* 大图片 */

.bigIMg {
    position: absolute;
}